CentOS+QT+gdb

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在一台centos 5.4 64bit机器上，不能使用Qt的debug模式。在termina下键入gdb，提示

gdb:error while loading shared libraries: libexpat.so.1: cannot open open shared object file: No such file or directory.

yum install expat

发现已经安装

ln -s /usr/lib/libexpat.so /usr/lib/libexpat.so.1 (32 bit)

ln -s /usr/lib64/libexpat.so /usr/lib64/libexpat.so.1 (64 bit)

即可解决该问题

gdb能正常运行，但是在Qt运行debug模式时，提示：

Undefined command:"bb"，Try "help"

http://bugreports.qt.nokia.com/browse/QTCREATORBUG-570?page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel

This is a bug in gdb.

I am seeing such crashes myself too every now and then.
Unfortunately there is really nothing Qt Creator can do here.

By the way: By now there is a newer version of gdb for Symbian available
(based on 6.8.50), maybe you have more luck with that version.